At the A1 level, 'didn’t' is one of the first ways you learn to talk about the past. It is very important because it allows you to say 'no' to things that happened yesterday or last week. You use it with a subject (like 'I', 'you', 'he', 'she') and then the simple form of the verb. For example, 'I didn’t go' or 'She didn’t eat'. At this level, you should focus on the pattern: Subject + didn’t + Verb. Don't worry about complicated verbs yet. Just use simple ones like 'go', 'see', 'eat', 'play', and 'work'. Remember, 'didn’t' is for the past. If you want to talk about today, you use 'don't' or 'doesn't'. It is a small word, but it helps you tell stories about your life. You will hear it a lot when people talk about their weekend or their day. It is a friendly, easy word to use in conversation. Just remember to keep the second verb simple!
At the A2 level, you are becoming more comfortable with 'didn’t'. You can now use it to describe more detailed events in the past. You understand that 'didn’t' is the short way of saying 'did not'. You should be careful not to make the common mistake of using the past tense of the main verb after 'didn’t'. For example, you know to say 'I didn’t watch the movie' instead of 'I didn’t watched'. At this level, you can also start using 'didn’t' in short answers. If someone asks, 'Did you finish your breakfast?', you can simply say, 'No, I didn’t'. This makes your English sound more natural. You are also starting to see 'didn’t' in simple stories and emails. It is a key word for explaining why something didn't happen, which is very useful for giving excuses or explaining problems. Keep practicing the connection between the subject and the verb!
At the B1 level, you should have a solid grasp of 'didn’t' and be using it fluently in both speech and writing. You are now moving beyond simple sentences and using 'didn’t' in more complex structures, such as with adverbs of frequency ('I usually didn’t go there') or in sentences with multiple clauses ('I didn’t go because I was tired'). You are also becoming aware of the difference between 'didn’t' and 'haven't'. You know that 'didn’t' is for a finished time in the past, like 'yesterday', while 'haven't' is for a time that continues until now. This is a very important distinction for clear communication. You can also use 'didn’t' in tag questions to check information, like 'You didn’t see my phone, did you?'. At this level, your goal is to use 'didn’t' accurately and naturally without having to think too much about the grammar rules. You are also starting to recognize when to use the full 'did not' for emphasis.
At the B2 level, you use 'didn’t' with nuance and precision. You understand the subtle shift in meaning when you use 'did not' instead of the contraction to emphasize a point or to sound more formal. You are comfortable using 'didn’t' in various sentence types, including conditional sentences ('If I didn’t have a car, I would take the bus') and in reported speech ('He said he didn’t know'). You are also aware of how 'didn’t' interacts with other words like 'any' and 'ever' ('I didn’t see any people' or 'I didn’t ever think that would happen'). At this level, you can follow fast-paced conversations where 'didn’t' might be pronounced very quickly or even elided. You are also able to use 'didn’t' to express surprise or disbelief in negative questions ('Didn’t you hear what she said?'). Your use of the word is now a natural part of your linguistic repertoire, allowing you to focus more on the content of your message than the mechanics of the grammar.
At the C1 level, your use of 'didn’t' is sophisticated and context-aware. You can effortlessly switch between 'didn’t' and 'did not' depending on the register of the situation. You understand how the placement of 'didn’t' can affect the focus and tone of a sentence, especially in complex literary or academic contexts. You are also familiar with how 'didn’t' is used in idiomatic expressions and more advanced grammatical structures, such as inversion for emphasis (though 'did not' is more common there). You can analyze the use of 'didn’t' in literature to understand character voice and narrative tone. Furthermore, you are sensitive to the phonetic variations of 'didn’t' in different English dialects and can adjust your listening strategies accordingly. At this level, 'didn’t' is not just a grammar rule but a stylistic tool that you use to fine-tune your communication and achieve specific rhetorical effects. You are also capable of correcting subtle errors in others' usage of the word.
At the C2 level, you have a masterly command of 'didn’t' and its role in the English language. You can use it with the same level of nuance as a highly educated native speaker. You are aware of the historical development of the 'do-support' system and how 'didn’t' fits into the broader evolution of English negation. You can use 'didn’t' in highly complex, multi-layered sentences without any loss of clarity or grammatical accuracy. You are also able to appreciate the rhythmic and prosodic qualities of the contraction in poetry and prose. In professional and academic settings, you know exactly when the use of 'didn’t' might be perceived as too informal and can seamlessly transition to more formal alternatives. Your understanding of the word extends to its psychological and social implications in discourse, such as how it can be used to mitigate conflict or establish common ground. For you, 'didn’t' is a small but vital part of a vast and flexible linguistic system that you navigate with complete ease and confidence.

didn’t 30秒で

  • A contraction of 'did not' used to negate actions in the past tense, essential for daily communication and storytelling.
  • Follows the pattern: Subject + didn’t + Base Verb. It is used for all verbs except 'to be' and modals.
  • Common in spoken and informal English, while 'did not' is preferred in formal or emphatic contexts.
  • Crucial for forming negative questions and tag questions, adding nuance and emotion to past tense discussions.

The word didn’t is one of the most fundamental building blocks of the English language, specifically serving as the negative contraction of the past tense auxiliary verb 'did not'. In the vast landscape of English grammar, negation is a critical component that allows speakers to describe what did not happen, what was not true, and what failed to occur in a time prior to the present moment. When we look at the mechanics of the word, it is a fusion of 'did'—the past tense of the auxiliary verb 'do'—and the negative particle 'not'. This contraction is ubiquitous in spoken English and informal to semi-formal writing, providing a smoother, more rhythmic flow to communication than its uncontracted counterpart. People use didn’t in almost every conceivable context, from describing a simple missed appointment to explaining complex historical events that failed to transpire. It is the linguistic tool that provides the 'no' to the past's 'yes'.

Grammatical Category
Auxiliary Verb (Negative Contraction)
Primary Function
To negate a verb in the simple past tense, indicating the non-occurrence of an action.

The usage of didn’t is so ingrained in the English-speaking mind that it often goes unnoticed, yet its absence would render us unable to express basic denials. For instance, if someone asks if you finished your homework, the response 'I didn’t finish it' is immediate and clear. Without this contraction, the speaker would have to say 'I did not finish it,' which, while perfectly correct, often carries a level of emphasis or formality that might not be intended in a casual conversation. The contraction softens the blow of the negation, making it a standard part of daily interaction. Furthermore, the word acts as a 'tense carrier'. In English, when we use an auxiliary verb like 'do' or 'did', that auxiliary takes on the responsibility of showing the tense, allowing the main verb to remain in its base, or infinitive, form. This is why we say 'I didn’t go' instead of 'I didn’t went'. The 'did' part already tells the listener we are talking about the past, so the main verb doesn't need to change.

She didn’t realize that the meeting had been canceled until she arrived at the empty office.

In terms of social dynamics, the choice between 'did not' and didn’t can signal the speaker's relationship with the listener or the seriousness of the topic. In a legal deposition or a formal academic paper, 'did not' is preferred for its precision and lack of colloquialism. However, in a novel, a screenplay, or a text message, didn’t is the standard. It reflects the natural cadence of human speech, where sounds are often elided to save effort and increase speed. The apostrophe in didn’t represents the missing 'o' in 'not', a visual marker of this phonetic shortcut. Interestingly, the word is used across all dialects of English, from British to American to Australian, making it a truly universal element of the language. It bridges the gap between different cultures by providing a shared structure for negation.

They didn’t want to leave the party because they were having such a wonderful time with their friends.

Historical Context
The use of 'do' as an auxiliary verb (do-support) became standard in English during the Early Modern period, replacing older forms of negation like 'I ate not'.

As we delve deeper into its usage, we see that didn’t is also used in tag questions, which are small questions added to the end of a sentence to seek confirmation. For example, 'You saw the movie, didn’t you?' Here, the contraction helps turn a statement into a query, facilitating social interaction and checking for shared understanding. This versatility makes it more than just a negative marker; it is a tool for engagement. Whether you are denying a rumor, correcting a mistake, or simply stating a fact about yesterday's weather, didn’t is the reliable workhorse of the English past tense. It allows for a level of nuance and brevity that is essential for effective communication in a fast-paced world.

The cat didn’t seem interested in the new toy I bought for it.

Using didn’t correctly is a hallmark of reaching an intermediate level of English proficiency. The most critical rule to internalize is the structural formula: Subject + didn’t + Base Form of the Verb. This rule is absolute for all regular and irregular verbs in the English language, with the notable exception of the verb 'to be' (which uses 'wasn't' or 'weren't'). For example, consider the verb 'to eat'. The past tense is 'ate'. However, when we negate it, we do not say 'I didn’t ate'. Instead, we say 'I didn’t eat'. The auxiliary 'did' has already 'captured' the past tense, leaving the main verb in its simplest form. This structural consistency is actually a relief for many learners, as they don't have to remember the past tense forms of every verb when they are speaking in the negative.

Regular Verb Example
I didn’t walk (not 'didn’t walked') to the store.
Irregular Verb Example
He didn’t buy (not 'didn’t bought') the car.

Beyond simple statements, didn’t plays a vital role in asking questions, specifically negative questions. Negative questions often carry an underlying tone of surprise, expectation, or even a subtle nudge for the listener to agree. For instance, 'Didn’t you see the sign?' implies that the speaker expected the person to have seen the sign and is surprised that they seemingly haven't. This usage adds a layer of emotional subtext to the conversation that a simple 'Did you see the sign?' lacks. It is a powerful tool for expressing disbelief or seeking confirmation of a negative assumption. In these cases, didn’t moves to the beginning of the sentence, preceding the subject, yet the main verb still remains in its base form.

Didn’t you hear the news about the upcoming holiday?

Another sophisticated use of didn’t is in the construction of 'tag questions'. These are short questions attached to the end of a positive statement to turn it into a question. For example, 'You finished the report, didn’t you?' This structure is incredibly common in conversational English. It serves several purposes: it can be used to check if information is correct, to encourage the listener to speak, or to build rapport by assuming a shared reality. The logic here is that if the main sentence is positive ('You finished'), the tag must be negative ('didn’t you'). Conversely, if the main sentence is negative ('You didn’t finish'), the tag must be positive ('did you?'). Mastering this flip-flop of negation is a key step toward sounding like a native speaker.

It is also important to consider the placement of adverbs when using didn’t. Generally, adverbs of frequency or manner can be placed either before or after the contraction, depending on the emphasis. 'I really didn’t know' emphasizes the depth of the ignorance, while 'I didn’t really know' might suggest a partial understanding or a more hesitant denial. This flexibility allows speakers to fine-tune their meaning. Furthermore, didn’t can be used in 'if' clauses (the second conditional) to talk about hypothetical pasts, although 'hadn't' is more common for past unreal conditions. For example, 'If I didn’t have to work, I would have gone to the beach.' Here, didn’t helps set up a scenario that is contrary to the actual past fact.

We didn’t even have time to say goodbye before the train pulled out of the station.

Common Pattern
I didn’t + [verb] + [object] + [time expression].

Finally, let's look at the use of didn’t in short answers. When someone asks a 'Did' question, the most natural short negative response is 'No, I didn’t' or 'No, he didn’t'. This is much more common than simply saying 'No' or the full 'No, I did not go'. It provides a complete grammatical thought in a very concise package. In summary, didn’t is a versatile and essential component of English sentence structure, appearing in statements, questions, tags, and short answers. Its consistent rules make it accessible, while its various applications provide the depth needed for nuanced communication.

He didn’t just fail the test; he completely forgot to show up for it.

The word didn’t is a staple of everyday English conversation. If you were to record a typical day in the life of an English speaker, you would likely hear this word dozens, if not hundreds, of times. It is the sound of the past being processed, corrected, and negotiated. You hear it in the kitchen ('I didn’t forget the milk!'), in the office ('The email didn’t arrive in my inbox'), and on the playground ('He didn’t share the ball'). Because it is a contraction, it represents the natural, informal way that people actually speak. While textbooks might emphasize 'did not', the reality of the street, the home, and the workplace is dominated by didn’t. It is a word that belongs to the people, reflecting the efficiency and flow of spoken language.

In Pop Culture
Song lyrics are filled with 'didn’t'. From Taylor Swift to classic rock, it is used to express regret, denial, and storytelling.
In Movies/TV
Screenwriters use 'didn’t' to make dialogue sound realistic. A character saying 'I did not do it' sounds like they are lying or being very dramatic, whereas 'I didn’t do it' sounds like a natural defense.

In the realm of digital communication—text messages, social media posts, and casual emails—didn’t is the undisputed king of past negation. The brevity it offers is perfect for the fast-paced nature of online interaction. You’ll see it in captions ('I didn’t expect this!'), in comments ('Why didn’t I think of that?'), and in status updates. It is so common that even in slightly more formal digital spaces, like a Slack channel for work, it is perfectly acceptable. The only place where you might consciously avoid it is in a formal report or a cover letter, where the full 'did not' conveys a sense of meticulousness and professionalism. But even then, the line is blurring as modern business communication becomes increasingly conversational.

“I didn’t come this far only to come this far,” is a popular motivational quote heard in many podcasts.

You also hear didn’t frequently in news reporting and storytelling. When a journalist describes an event, they often use the contraction to keep the narrative moving. 'The suspect didn’t resist arrest' or 'The company didn’t comment on the merger.' In these contexts, didn’t helps to deliver information quickly and clearly. Similarly, in literature, authors use the contraction in dialogue to differentiate between how characters speak and how the narrator describes the world. A narrator might use 'did not' for a formal, detached tone, while the characters use didn’t to sound human and relatable. This distinction is a subtle but powerful tool in the writer's arsenal.

Finally, consider the world of advertising and marketing. Slogans and ad copy often use didn’t to create a friendly, accessible voice. 'You didn’t know you needed this' or 'We didn’t stop at just one.' By using the contraction, the brand positions itself as a peer to the consumer, rather than a distant authority. It creates a sense of intimacy and shared experience. Whether you are listening to a podcast, watching a YouTube vlog, or chatting with a neighbor, didn’t is the sound of the English language in action—practical, efficient, and deeply human. It is a word that connects the speaker to the listener through the shared understanding of what has passed.

In the movie, the hero shouted, “I didn’t have a choice!” to justify his actions.

Podcast Usage
In conversational podcasts, 'didn’t' is used to correct guests or clarify points: 'Wait, you didn’t actually go there, did you?'

In summary, didn’t is everywhere. It is the default setting for past negation in the English-speaking world. From the most casual 'didn’t' tossed over a shoulder to the most poignant 'didn’t' in a heartbreak song, it is a word that carries the weight of our denials and the clarity of our history. To hear it is to hear the heartbeat of modern English communication.

Even though didn’t is a common word, it is a frequent source of errors for English learners. The most prevalent mistake, by far, is the 'double past tense' error. This occurs when a speaker uses didn’t (which is already in the past tense) and then also puts the main verb in the past tense. For example, saying 'I didn’t went' instead of 'I didn’t go'. This error is logical from a learner's perspective—they want to make sure the listener knows they are talking about the past—but in English, the auxiliary verb 'did' does all the heavy lifting for the tense. Once 'did' is used, the main verb must return to its base form. It is helpful to think of didn’t as a magnet that pulls the past tense away from the main verb.

Incorrect
She didn’t saw the movie.
Correct
She didn’t see the movie.

Another common pitfall is the confusion between didn’t and other negative auxiliaries like 'don't' or 'haven't'. This is often a matter of getting the timeframe wrong. A learner might say 'I don't go to the party yesterday' instead of 'I didn’t go'. The distinction between the present habit ('don't') and the specific past event (didn’t) is crucial for clarity. Similarly, 'haven't' is used for the present perfect (actions with a connection to now), while didn’t is for the finished past. Mixing these up can lead to significant misunderstandings about when an event occurred. For instance, 'I haven't seen him' implies you might still see him today, whereas 'I didn’t see him' refers to a specific time in the past, like at lunch.

Common Error: “He didn’t came to work.” (Correct: “He didn’t come to work.”)

Double negatives are another area where mistakes occur, though this is also common among some native speakers in certain dialects. A sentence like 'I didn’t see nobody' is technically incorrect in standard English because didn’t and 'nobody' are both negative. In standard English, the two negatives cancel each other out, or more accurately, they create a non-standard grammatical structure. The correct form would be 'I didn’t see anybody' or 'I saw nobody'. For a learner, it is safest to stick to the 'didn’t + any' rule to avoid this confusion. This ensures that the negation is clear and follows the rules of formal and standard informal English.

Finally, there is the issue of the verb 'to be'. As mentioned before, didn’t is never used with 'was' or 'were'. You cannot say 'I didn’t be happy' or 'They didn’t be there'. Instead, the negation is built directly into the verb: 'I wasn't happy' or 'They weren't there'. This is a unique exception in English where the verb 'to be' does not require the 'do-support' auxiliary. Learners often forget this and try to apply the didn’t rule universally. Remembering that 'to be' is a 'strong' verb that can negate itself is a key milestone in grammar mastery. By avoiding these common mistakes—the double past, the wrong auxiliary, double negatives, and 'didn’t be'—you will communicate much more effectively and sound more like a proficient speaker.

Incorrect: “I didn’t was at home.” (Correct: “I wasn't at home.”)

Mistake Type
Auxiliary Overuse: Trying to use 'didn’t' with modal verbs (e.g., 'didn’t can' instead of 'couldn't').

In conclusion, while didn’t is a simple word, its correct application requires a clear understanding of English tense and auxiliary rules. Paying attention to the verb that follows it and the specific context of the past event will help you avoid these frequent errors and speak with greater confidence.

While didn’t is the most common way to express past negation, it is not the only way. Understanding the alternatives can help you vary your speech and writing, and choose the word that best fits the tone you want to convey. The most direct alternative is, of course, the uncontracted did not. This version is used for emphasis, formality, or clarity. If you want to strongly deny something, you might say, 'I did not take your keys!' The separation of the two words allows you to put a heavy stress on 'not', making the negation much more forceful. In formal writing, such as academic essays or legal documents, 'did not' is the standard, as contractions are often seen as too casual.

did not
Formal and emphatic. Used when you want to be very clear or serious.
never
Used to indicate that an action didn’t happen at any time in the past, not just a specific moment.

Another powerful alternative is never. While didn’t usually refers to a specific instance, 'never' suggests a total absence of the action over a period of time. For example, 'I didn’t go to Paris' might mean I didn’t go last summer, but 'I never went to Paris' means I have not gone at any point in my life up to that moment. 'Never' is often used for dramatic effect or to emphasize a consistent habit of non-action. However, be careful: in some informal dialects, 'never' is used as a direct substitute for didn’t (e.g., 'I never did it' instead of 'I didn’t do it'), but this is not considered standard in formal English. Using 'never' correctly adds a temporal depth to your negation that didn’t lacks.

“I didn’t see him” (specific time) vs. “I never saw him” (all of the past).

For more formal or descriptive contexts, you might use phrases like failed to or refrained from. These alternatives provide more information about why or how the action didn’t happen. 'The company failed to meet its goals' is more professional and descriptive than 'The company didn’t meet its goals'. It implies an attempt that was unsuccessful. Similarly, 'He refrained from commenting' suggests a conscious choice not to speak, whereas 'He didn’t comment' is a neutral statement of fact. These choices allow you to paint a more detailed picture of the situation. Other options include 'neglected to' (implying forgetfulness) or 'avoided' (implying a deliberate effort to stay away from the action).

In summary, while didn’t is your go-to word for most situations, don't be afraid to explore its alternatives. Use 'did not' for emphasis, 'never' for total negation, and descriptive phrases like 'failed to' for formal clarity. By choosing the right word for the right moment, you can make your English more precise, expressive, and professional. Each of these words and phrases has its own 'flavor', and learning when to use each one is a sign of a truly advanced speaker. The more you practice, the more natural these choices will become, allowing you to navigate the nuances of the English language with ease.

The witness failed to identify the suspect in the lineup.

Comparison
didn’t: Neutral, common.
wasn't able to: Focuses on lack of ability.
chose not to: Focuses on the decision.

By expanding your vocabulary beyond the basic contraction, you open up new ways to express yourself and better understand the subtle meanings behind what others say. Whether you are writing a story, giving a presentation, or just having a chat, having these alternatives at your fingertips is a great asset.

How Formal Is It?

豆知識

Before 'didn’t' and the 'do-support' system became popular, English speakers would negate verbs by simply adding 'not' after them, like 'I went not' instead of 'I didn’t go'. This is still seen in some archaic or poetic writing.

発音ガイド

UK /ˈdɪdnt/
US /ˈdɪdənt/
The stress is on the first syllable: DID-nt.
韻が合う語
couldn't shouldn't wouldn't hadn't wasn't isn't doesn't hasn't
よくある間違い
  • Pronouncing it as 'did-not' in casual speech.
  • Forgetting the 'n' sound and saying 'did-t'.
  • Over-emphasizing the final 't'.
  • Using a long 'i' sound like 'died-nt'.
  • Adding an extra vowel sound at the end.

難易度

読解 1/5

Very easy to recognize in text.

ライティング 3/5

Learners often forget to use the base verb after it.

スピーキング 2/5

Natural pronunciation requires some practice with the 'nt' sound.

リスニング 2/5

Can be hard to hear in very fast speech.

次に学ぶべきこと

前提知識

do did not yesterday past

次に学ぶ

wasn't weren't hadn't haven't never

上級

do-support auxiliary inversion negative concord elliptical responses

知っておくべき文法

Do-Support

English requires 'do' to form negatives and questions in the simple past.

Base Form Requirement

After 'didn’t', the main verb must be in its base form (e.g., 'didn’t see').

Negative Tag Questions

A positive statement takes a negative tag: 'You went, didn’t you?'

Contraction Rules

The apostrophe replaces the 'o' in 'not'.

Auxiliary Tense Marking

The auxiliary 'did' carries the past tense, not the main verb.

レベル別の例文

1

I didn’t go to school yesterday.

I stayed home.

didn't + go (base form)

2

She didn’t eat her lunch.

Her lunch box is full.

didn't + eat (base form)

3

They didn’t play football.

It was raining.

didn't + play (base form)

4

He didn’t see the movie.

He was busy.

didn't + see (base form)

5

We didn’t have a party.

It was a quiet night.

didn't + have (base form)

6

You didn’t call me.

My phone was silent.

didn't + call (base form)

7

The cat didn’t sleep.

It was awake all night.

didn't + sleep (base form)

8

I didn’t buy the bread.

The shop was closed.

didn't + buy (base form)

1

I didn’t finish the book last night.

I fell asleep.

didn't + finish

2

He didn’t like the food at the restaurant.

He left most of it.

didn't + like

3

We didn’t arrive on time for the meeting.

The traffic was bad.

didn't + arrive

4

She didn’t tell me her secret.

She kept it to herself.

didn't + tell

5

They didn’t win the game, but they played well.

The score was close.

didn't + win

6

I didn’t understand the teacher's question.

It was too difficult.

didn't + understand

7

You didn’t bring your umbrella, did you?

You are getting wet.

Tag question with didn't

8

The bus didn’t stop at the corner.

It was full.

didn't + stop

1

I didn’t realize how late it was until I saw the clock.

I lost track of time.

didn't + realize

2

She didn’t think the plan would work, but it did.

She was skeptical.

didn't + think

3

We didn’t have enough money to go on vacation this year.

Our budget was tight.

didn't + have

4

He didn’t want to hurt your feelings, he was just being honest.

His intention was good.

didn't + want

5

They didn’t expect to see so many people at the concert.

The crowd was huge.

didn't + expect

6

I didn’t recognize him because he had grown a beard.

He looked different.

didn't + recognize

7

Didn’t you see the email I sent you this morning?

I'm checking if you read it.

Negative question with didn't

8

The company didn’t provide any training for the new software.

We had to learn it ourselves.

didn't + provide

1

If I didn’t know better, I’d say you were lying.

It sounds like a lie.

Second conditional with didn't

2

She didn’t just pass the exam; she got the highest score in the class.

She did exceptionally well.

didn't + just (emphasis)

3

We didn’t anticipate the technical difficulties we encountered.

The problems were unexpected.

didn't + anticipate

4

He didn’t hesitate to help when he saw the accident.

He acted immediately.

didn't + hesitate

5

They didn’t seem to care about the consequences of their actions.

They were indifferent.

didn't + seem

6

I didn’t feel comfortable speaking in front of such a large audience.

I was nervous.

didn't + feel

7

Didn’t it occur to you that she might be upset?

You should have thought of that.

Negative question for realization

8

The government didn’t respond to the protests until it was too late.

Their reaction was slow.

didn't + respond

1

The author didn’t explicitly state his intentions, leaving the ending open to interpretation.

It was ambiguous.

didn't + explicitly state

2

She didn’t let the setback discourage her from pursuing her dreams.

She remained determined.

didn't + let (causative)

3

We didn’t fully appreciate the complexity of the situation at the time.

We underestimated it.

didn't + fully appreciate

4

He didn’t so much as glance in my direction as he walked past.

He completely ignored me.

didn't + so much as (idiomatic)

5

They didn’t account for the possibility of a sudden market crash.

They missed a key factor.

didn't + account for

6

I didn’t find the argument particularly convincing, despite the evidence presented.

I wasn't persuaded.

didn't + find

7

Why didn’t you bring this to my attention sooner?

You should have told me earlier.

Negative question for accountability

8

The study didn’t yield the results the researchers had hoped for.

It was a disappointment.

didn't + yield

1

The nuance of the performance didn’t escape the more discerning members of the audience.

They noticed the subtle details.

didn't + escape (metaphorical)

2

He didn’t deign to respond to such a frivolous accusation.

He felt it was beneath him.

didn't + deign

3

The significance of the discovery didn’t dawn on them until much later.

They realized it slowly.

didn't + dawn on

4

She didn’t allow her personal biases to cloud her professional judgment.

She remained objective.

didn't + allow

5

The transition to the new system didn’t go as smoothly as the consultants had promised.

There were many problems.

didn't + go (phrasal)

6

It didn’t sit well with me that he took all the credit for our collective effort.

I felt it was unfair.

didn't + sit well (idiom)

7

Didn’t the very nature of the task preclude such a simplistic approach?

The task was too complex for that.

Rhetorical negative question

8

The historical record didn’t substantiate the claims made by the controversial historian.

There was no evidence.

didn't + substantiate

よく使う組み合わせ

didn’t mean to
didn’t have a clue
didn’t want to
didn’t think so
didn’t see it coming
didn’t make sense
didn’t feel like
didn’t even try
didn’t say a word
didn’t stand a chance

よく使うフレーズ

I didn’t know.

— A simple statement of ignorance about a past fact.

I didn’t know you were coming today.

It didn’t work.

— Used when an attempt or a machine failed to function.

I tried to fix the TV, but it didn’t work.

He didn’t show up.

— Used when someone failed to arrive at a scheduled time.

We waited for an hour, but he didn’t show up.

I didn’t catch that.

— Used when you didn't hear or understand what someone said.

Sorry, I didn’t catch that. Could you repeat it?

It didn’t matter.

— Used when something was not important or had no effect.

I was late, but it didn’t matter because the meeting was delayed.

I didn’t mean it.

— Used to apologize for something said or done that was misunderstood.

I'm sorry I was rude; I didn’t mean it.

She didn’t have to.

— Used when an action was not necessary.

She brought a gift, but she didn’t have to.

They didn’t mind.

— Used when people were not bothered by something.

We were late, but they didn’t mind at all.

I didn’t expect that.

— Used to express surprise at an outcome.

The movie had a twist I didn’t expect.

It didn’t take long.

— Used when an action was completed quickly.

I finished the task; it didn’t take long.

よく混同される語

didn’t vs don't

'Don't' is for the present; 'didn't' is for the past.

didn’t vs wasn't

'Wasn't' is for the verb 'to be'; 'didn't' is for all other verbs.

didn’t vs haven't

'Haven't' is for the present perfect; 'didn't' is for the simple past.

慣用句と表現

"didn’t have a leg to stand on"

— To have no evidence or justification for one's argument.

Without the receipts, he didn’t have a leg to stand on.

Informal
"didn’t bat an eyelid"

— To show no surprise or emotion in a difficult situation.

When she heard the news, she didn’t bat an eyelid.

Neutral
"didn’t pull any punches"

— To speak very directly and honestly, even if it is harsh.

The critic didn’t pull any punches in his review.

Informal
"didn’t miss a beat"

— To continue without hesitation, especially after an interruption.

He was interrupted, but he didn’t miss a beat and kept talking.

Neutral
"didn’t sit right with me"

— To feel that something is wrong, unfair, or suspicious.

The way he explained the accident didn’t sit right with me.

Informal
"didn’t know what hit them"

— To be completely surprised by a sudden event or attack.

The team was so fast that the opponents didn’t know what hit them.

Informal
"didn’t have the heart to"

— To be unable to do something because it would be too unkind.

I didn’t have the heart to tell him his singing was terrible.

Neutral
"didn’t lift a finger"

— To make no effort at all to help someone.

I was struggling with the bags, but he didn’t lift a finger.

Informal
"didn’t break the bank"

— To not cost a lot of money; to be affordable.

We went out for dinner, and it didn’t break the bank.

Informal
"didn’t give it a second thought"

— To not worry about something or to do it without hesitation.

I lent him the money and didn’t give it a second thought.

Neutral

間違えやすい

didn’t vs didn't

Tense confusion

'Didn't' is strictly for the past. 'Don't' is for the present.

I didn't go (past) vs. I don't go (habit).

didn’t vs wasn't

Verb type confusion

'Wasn't' is used with adjectives or locations. 'Didn't' is used with actions.

I wasn't happy vs. I didn't smile.

didn’t vs hadn't

Past perfect confusion

'Hadn't' is for an action before another past action. 'Didn't' is for a simple past action.

I hadn't eaten before he arrived vs. I didn't eat.

didn’t vs couldn't

Ability vs. Action

'Couldn't' means you were unable to. 'Didn't' means you simply did not do it.

I couldn't go (impossible) vs. I didn't go (choice/fact).

didn’t vs never

Frequency confusion

'Never' means 0% of the time. 'Didn't' means not at one specific time.

I never ate meat vs. I didn't eat meat yesterday.

文型パターン

A1

I didn’t [verb].

I didn’t eat.

A2

He didn’t [verb] [object] [time].

He didn’t play tennis yesterday.

B1

Didn’t you [verb] [object]?

Didn’t you see the sign?

B1

[Subject] [verb]ed, didn’t [subject]?

She called, didn’t she?

B2

If I didn’t [verb], I would [verb].

If I didn’t work, I would travel.

B2

I didn’t [verb] because [clause].

I didn’t go because I was sick.

C1

It didn’t [verb] as [adjective] as [noun].

It didn’t go as smoothly as planned.

C2

The [noun] didn’t [verb] the [noun] until [clause].

The significance didn’t dawn on him until he left.

語族

動詞

do
did
done
doing
does

関連

not
do-support
negation
contraction
auxiliary

使い方

frequency

Extremely High (Top 100 words in English)

よくある間違い
  • I didn’t went. I didn’t go.

    The auxiliary 'did' already shows the past tense, so the main verb must be in the base form.

  • He didn’t be there. He wasn't there.

    The verb 'to be' does not use 'didn’t' for negation; it uses 'wasn't' or 'weren't'.

  • I didn’t see nobody. I didn’t see anybody.

    This is a double negative. In standard English, use 'anybody' with 'didn’t'.

  • She didn’t can come. She couldn't come.

    Modal verbs like 'can' have their own past negative forms and don't use 'didn’t'.

  • They didn’t had time. They didn’t have time.

    Even 'have' must be in its base form after 'didn’t'.

ヒント

The Base Form Rule

Always follow 'didn’t' with the dictionary form of the verb. No -ed, no irregular past forms!

Natural Flow

Use 'didn’t' in 99% of your conversations to sound more natural and less like a textbook.

Formal vs. Informal

Switch to 'did not' for your university essays or professional emails to show a higher level of formality.

The 'N' Sound

If you can't hear the 't', listen for the 'n' sound after 'did'—that's the clue it's negative.

The Tense Thief

Think of 'didn’t' as a thief that steals the past tense from the main verb.

Softening Negation

Using 'didn’t' is softer than 'did not', which can sometimes sound too harsh or confrontational.

Avoid 'Didn't Be'

Never use 'didn't' with 'be'. Use 'wasn't' or 'weren't' instead.

Apostrophe Placement

The apostrophe always goes between the 'n' and the 't' (didn't), never before the 'n'.

Expressing Surprise

Start a question with 'Didn't you...' to show you are surprised someone didn't do something.

Vary Your Words

Once you master 'didn't', try using 'failed to' or 'never' to make your English more interesting.

暗記しよう

記憶術

Think of 'didn’t' as the 'Past Tense Eraser'. It takes the past tense away from the main verb and keeps it for itself. (I didn’t GO, not I didn’t WENT).

視覚的連想

Imagine a big red 'X' over a picture of something happening yesterday. The 'X' is 'didn’t'.

Word Web

Past Tense Negation Auxiliary Contraction No Did not Base Verb Yesterday

チャレンジ

Try to write five sentences about things you didn’t do last weekend. Make sure to use the base form of the verb each time!

語源

The word 'didn’t' is a contraction of 'did' and 'not'. 'Did' comes from the Old English 'dyde', the past tense of 'don' (to do). 'Not' comes from the Old English 'nāwiht', meaning 'nothing'. The contraction itself became common in the 17th century as English speakers sought more efficient ways to speak.

元の意味: The literal meaning is 'did nothing' or 'did not', used to negate an action.

Germanic (English)

文化的な背景

There are no major sensitivities, but be aware that in very formal legal or academic settings, contractions should be avoided.

Contractions like 'didn’t' are essential for sounding natural. Avoiding them completely can make a speaker sound robotic or overly stiff.

'I didn’t do it!' - Bart Simpson's famous catchphrase. 'I didn’t see that coming' - A common trope in movie reviews. 'We didn’t start the fire' - A famous song by Billy Joel.

実生活で練習する

実際の使用場面

Excuses

  • I didn’t hear the alarm.
  • I didn’t see the message.
  • I didn’t have time.
  • I didn’t know.

Storytelling

  • He didn’t say anything.
  • They didn’t believe me.
  • It didn’t end well.
  • We didn’t stop.

Customer Service

  • The package didn’t arrive.
  • The code didn’t work.
  • I didn’t receive a refund.
  • You didn’t tell me.

Relationships

  • You didn’t listen.
  • I didn’t mean to hurt you.
  • We didn’t agree on this.
  • She didn’t call back.

Work/Office

  • The meeting didn’t happen.
  • He didn’t send the file.
  • I didn’t get the memo.
  • It didn’t pass the test.

会話のきっかけ

"Why didn’t you tell me about the party last night?"

"Didn’t you think the movie was a bit too long?"

"I didn’t see you at the gym today, were you busy?"

"Didn’t we meet at the conference last year?"

"Why didn’t the project get finished on time?"

日記のテーマ

Write about a time you didn’t take a chance and later regretted it.

Describe a day where everything didn’t go according to plan.

What is something you didn’t like as a child but love now?

Write about a secret you didn’t tell anyone for a long time.

Reflect on a mistake you made because you didn’t listen to advice.

よくある質問

10 問

No, this is a common mistake. After 'didn’t', you must use the base form of the verb, which is 'go'. So, the correct sentence is 'I didn’t go'.

Use 'did not' in formal writing, like essays or business letters, or when you want to emphasize the word 'not' in a strong denial.

Yes, 'didn’t' is used for all subjects (I, you, he, she, it, we, they). It does not change like 'don't' and 'doesn't' do in the present tense.

No. For the verb 'to be', use 'wasn't' (I, he, she, it) or 'weren't' (you, we, they). For example, say 'I wasn't there', not 'I didn’t be there'.

A tag question is a small question at the end of a sentence. For example, 'You saw him, didn’t you?' It is used to check if something is true.

It is pronounced like 'DID-unt'. In fast speech, the 't' at the end is often very soft or silent.

No. Modal verbs have their own negative forms, like 'couldn't' or 'mustn't'. You cannot say 'didn’t can'.

No, 'didn’t' is only for the past tense. For the future, use 'won't' (will not).

Yes, in a negative question. For example, 'Didn’t you see the news?'

'Didn’t' usually refers to one specific time, while 'never' means it didn't happen at any time in the past.

自分をテスト 180 問

writing

Write a sentence about something you didn't do yesterday.

Well written! Good try! Check the sample answer below.

正解! おしい! 正解:
writing

Change this sentence to negative: 'She bought a new car.'

Well written! Good try! Check the sample answer below.

正解! おしい! 正解:
writing

Write a negative question using 'didn't'.

Well written! Good try! Check the sample answer below.

正解! おしい! 正解:
writing

Use 'didn't' in a tag question.

Well written! Good try! Check the sample answer below.

正解! おしい! 正解:
writing

Write a sentence using 'didn't' and 'realize'.

Well written! Good try! Check the sample answer below.

正解! おしい! 正解:
writing

Explain why 'I didn't went' is wrong.

Well written! Good try! Check the sample answer below.

正解! おしい! 正解:
writing

Write a short dialogue using 'didn't' twice.

Well written! Good try! Check the sample answer below.

正解! おしい! 正解:
writing

Rewrite 'I did not eat' using a contraction.

Well written! Good try! Check the sample answer below.

正解! おしい! 正解:
writing

Write a sentence about a missed opportunity using 'didn't'.

Well written! Good try! Check the sample answer below.

正解! おしい! 正解:
writing

Use 'didn't' in a conditional sentence.

Well written! Good try! Check the sample answer below.

正解! おしい! 正解:
writing

Write a sentence using 'didn't' and 'mean to'.

Well written! Good try! Check the sample answer below.

正解! おしい! 正解:
writing

Describe a movie you didn't like.

Well written! Good try! Check the sample answer below.

正解! おしい! 正解:
writing

Write a sentence about something a friend didn't do.

Well written! Good try! Check the sample answer below.

正解! おしい! 正解:
writing

Use 'didn't' to describe a technical problem.

Well written! Good try! Check the sample answer below.

正解! おしい! 正解:
writing

Write a sentence using 'didn't' and 'expect'.

Well written! Good try! Check the sample answer below.

正解! おしい! 正解:
writing

Rewrite: 'He failed to see the sign' using 'didn't'.

Well written! Good try! Check the sample answer below.

正解! おしい! 正解:
writing

Write a sentence using 'didn't' and 'even'.

Well written! Good try! Check the sample answer below.

正解! おしい! 正解:
writing

Use 'didn't' in a sentence about a vacation.

Well written! Good try! Check the sample answer below.

正解! おしい! 正解:
writing

Write a sentence using 'didn't' and 'understand'.

Well written! Good try! Check the sample answer below.

正解! おしい! 正解:
writing

Write a sentence about a food you didn't eat.

Well written! Good try! Check the sample answer below.

正解! おしい! 正解:
speaking

Pronounce 'didn't' clearly.

Read this aloud:

正解! おしい! 正解:
speaking

Say: 'I didn't see the movie.'

Read this aloud:

正解! おしい! 正解:
speaking

Ask: 'Didn't you hear the news?'

Read this aloud:

正解! おしい! 正解:
speaking

Say: 'No, I didn't.'

Read this aloud:

正解! おしい! 正解:
speaking

Say: 'He didn't tell me.'

Read this aloud:

正解! おしい! 正解:
speaking

Say: 'We didn't have time.'

Read this aloud:

正解! おしい! 正解:
speaking

Practice the tag: 'You went, didn't you?'

Read this aloud:

正解! おしい! 正解:
speaking

Say: 'It didn't work.'

Read this aloud:

正解! おしい! 正解:
speaking

Say: 'I didn't mean to.'

Read this aloud:

正解! おしい! 正解:
speaking

Say: 'She didn't like it.'

Read this aloud:

正解! おしい! 正解:
speaking

Say: 'They didn't arrive.'

Read this aloud:

正解! おしい! 正解:
speaking

Say: 'I didn't know.'

Read this aloud:

正解! おしい! 正解:
speaking

Say: 'Didn't it rain?'

Read this aloud:

正解! おしい! 正解:
speaking

Say: 'He didn't finish.'

Read this aloud:

正解! おしい! 正解:
speaking

Say: 'You didn't call.'

Read this aloud:

正解! おしい! 正解:
speaking

Say: 'I didn't see him.'

Read this aloud:

正解! おしい! 正解:
speaking

Say: 'We didn't find it.'

Read this aloud:

正解! おしい! 正解:
speaking

Say: 'She didn't buy it.'

Read this aloud:

正解! おしい! 正解:
speaking

Say: 'They didn't play.'

Read this aloud:

正解! おしい! 正解:
speaking

Say: 'I didn't feel well.'

Read this aloud:

正解! おしい! 正解:
listening

Listen and write: 'I didn't see him.'

正解! おしい! 正解:
正解! おしい! 正解:
listening

Listen and write: 'She didn't go.'

正解! おしい! 正解:
正解! おしい! 正解:
listening

Listen and write: 'Didn't you know?'

正解! おしい! 正解:
正解! おしい! 正解:
listening

Listen and write: 'It didn't matter.'

正解! おしい! 正解:
正解! おしい! 正解:
listening

Listen and write: 'We didn't win.'

正解! おしい! 正解:
正解! おしい! 正解:
listening

Listen and write: 'He didn't like it.'

正解! おしい! 正解:
正解! おしい! 正解:
listening

Listen and write: 'They didn't call.'

正解! おしい! 正解:
正解! おしい! 正解:
listening

Listen and write: 'I didn't hear you.'

正解! おしい! 正解:
正解! おしい! 正解:
listening

Listen and write: 'Didn't it work?'

正解! おしい! 正解:
正解! おしい! 正解:
listening

Listen and write: 'She didn't tell me.'

正解! おしい! 正解:
正解! おしい! 正解:
listening

Listen and write: 'We didn't find it.'

正解! おしい! 正解:
正解! おしい! 正解:
listening

Listen and write: 'He didn't show up.'

正解! おしい! 正解:
正解! おしい! 正解:
listening

Listen and write: 'I didn't expect that.'

正解! おしい! 正解:
正解! おしい! 正解:
listening

Listen and write: 'You didn't see it.'

正解! おしい! 正解:
正解! おしい! 正解:
listening

Listen and write: 'They didn't play well.'

正解! おしい! 正解:
正解! おしい! 正解:

/ 180 correct

Perfect score!

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